Target net8.0 for test projects

Author: Swimburger

src/AssemblyAI.IntegrationTests/AssemblyAI.IntegrationTests.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFrameworks>net462;net6.0</TargetFrameworks>
+        <TargetFrameworks>net462;net8.0</TargetFrameworks>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
         <LangVersion>12</LangVersion>

src/AssemblyAI.UnitTests/AssemblyAI.UnitTests.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFrameworks>net462;net6.0</TargetFrameworks>
+        <TargetFrameworks>net462;net8.0</TargetFrameworks>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
         <LangVersion>12</LangVersion>

src/AssemblyAI.UnitTests/UserAgentTests.cs

@@ -15,8 +15,8 @@ public void TestDefaultUserAgent()
         Assert.That(userAgentString, Does.StartWith("AssemblyAI/1.0 ("));
         Assert.That(userAgentString, Does.EndWith(")"));
         Assert.That(userAgentString, Does.Contain("sdk=CSharp/"));
-#if NET6_0
-        Assert.That(userAgentString, Does.Contain("runtime_env=.NET/6."));
+#if NET8_0
+        Assert.That(userAgentString, Does.Contain("runtime_env=.NET/8."));
 #elif NET462
         Assert.That(userAgentString, Does.Contain("runtime_env=.NET Framework/4."));
 #else